Thanks to modern navigational tools we now know that the true prime meridian runs through a park next door.

The first geometric self-supporting spiral stairs in Britain are a truly beautiful sight.

A 1,215-foot tunnel transports pedestrians beneath the River Thames.

The Lowcountry color with the power to stop evil from entering a home.

The former home of the Nobel Prize-winning American writer is now home to dozens of six-toed cats.

This magnificently macabre shield shows the power of chivalrous love in medieval times.

This intriguing Bronze Age artifact spent centuries hidden within a Welsh faerie hill.

This bewitching Babylonian goddess haunts a hallway of the British Museum.

The "lost friend” is the most famous of the six moai statues that were removed from Easter Island.

More than a million titles fill the labyrinthine shelves of this prestigious private library.

The perfectly preserved underground rooms where Churchill plotted the war against Germany.

The bronze uniforms commemorate the vital role of women during World War II.

A mysterious shape catches the eye in this 16th-century painting.

This London pub hides a peculiar secret: a recreation of the rooms shared at 221b Baker Street by Sherlock Holmes and Dr. Watson.

The world's largest collection of ticks.

The humble beginnings of one of America’s greatest songsmiths.

One of Savannah's oldest and most haunted cemeteries, featuring graves desecrated by Sherman's Union Army.

The first public building in Savannah to offer air conditioning was a luxurious cinema that still operates today.

This quirky curiosity shop takes its cues from the world's bazaars.

Performers, intricate sets, and a real speakeasy tell the story of the 18th Amendment.

This kitschy tavern is also home to rare early editions of "Treasure Island."

A statue honoring 44 continuous years of greeting passing ships.

Oldest unrestored plantation house in America that is open to the public.

This recently rediscovered Civil War-era submarine was the first to ever sink an enemy ship.